How We Install a Stormwater Drain

08/09/2020

We ensure the pipes we install are of a higher class than required for the estimated normal pressure that will be on them, as a safety precaution.


We inspect for any damage or unaccounted-for materials on the pre-cast stormwater pit and drainage pipes before lifting and lowering them into the excavated area.

  • the number of outlets for pipes a pre-cast pit should have and the provisions to attach them;

  • the possibility and amount of expansion and contraction the pipes might succumb to due to climate;

  • and the class of the pipes.

When preparing the pre-cast pit and drainage pipes, we consider:

  • Light duty rainwater pits with plastic bases
  • Heavy duty stormwater pits with polyproline bases
  • Plastic/ aluminium top filter lids
  • Leaf guards and other filtering devices

The stormwater pits we use are pre-cast (i.e. constructed before installation). They’re made of pre-cast concrete or recycled plastic. The types of pits and pit products we most commonly use are:

1. Prepare the Pipes and Pre-Cast Pit

Stormwater is the water that runs off rooves, driveways and other large surfaces in a storm. Stormwater drains, including stormwater pits and drainage pipes, help to combat the effects of excessive stormwater runoff. Stormwater pits alleviate flooding in a localised area by holding the runoff until it flows into connected drainage pipes in the council’s main system.

As new stormwater drains connect to the council’s main system, it’s a legal requirement to get their permission first. Your local council may send an inspector to your site to determine if it’s suitable, and you may have to pay a fee.

Stormwater drains must be installed by licenced plumbers or rainwater drain installation experts to ensure it’s done right.

Golf-Spectrum

Whether you need stormwater solutions for your residential building, commercial or civil building or golf course, Golf Spectrum can assist you. We satisfy our customers by going above and beyond in all our civil construction services. Call us today for a free quote.

Before digging, we inspect the proposed stormwater drain site for its stability and compactness. Then, we dig trenches for the pipes and the hole for the stormwater pit.

We dig our trenches as narrow as practical, while allowing space for working area, jointing and compaction, and considering the stability of the trench. Wider trenches are generally more stable than narrow trenches. We also dig wide enough to allow for expansion and contraction of the pipes due to changing climate conditions. We dig deep enough that no water can infiltrate the trench and cause the pipes to float, and shallow enough that the pipes can withstand the dirt load weighing above them. Then we dig a smaller trench within the trench to place the pipe in.

We can dig under roads, taking into account the extra load and the depth excavators might dig to in future roadworks.

•    Beaudesert
•    Ipswich
•    Pilton
•    Caloundra
•    Gatton
•    Southport
•    Killoy
•    Noosa
•    Burleigh Heads
•    Tarong
•    Toowoomba
•    Clifton
•    Beerwah
•    Crow’s Nest
•    Redbank

Golf Spectrum can provide stormwater drainage installation to the Sunshine Coast, including these locations:

We install stormwater drains!

After applying the sealant and grout and waiting for it to dry, we backfill, compact and level the trenches, then install the grate atop the stormwater drain. 


Our backfill accounts for expansion and contraction of the pipes due to changing climates and consists of underlay and overlay. Sand is the best material for underlay, but crushed rock or gravel are close contenders. Our overlay backfill is the same as underlay and is applied in layers. 


We compact and level and install the grate – which filters out leaves and other debris – as well as any other filtration system you require.

4. Apply Sealant/ Grout, Backfill and Install Grate

When attaching the pipes to the pre-cast pit, we do so firmly enough to avoid flotation in the event of infiltrating water in the trench. We can then bend the pipes with a padded bending aid, as the pipes can only be attached while straight. 


If a trench is unstable, we can also support it with timber trench walls and steel rods and input additional support for slopes 20% or steeper.

3. Lower Pre-Cast Pit and Attach the Drainage Pipes

2. Excavate

Looking for a free quote? Call us or send us an online enquiry below.

Contact us today for a quote!

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